1. DPI
水平方向: Hdpi = H_resolution x 1_inch / H_length
垂直方向: Vdpi = V_resolution x 1_inch / V_length
2. pixel pitch (单个像素宽度)
H pixel pitch = H_length / H_resolution
V pixel pitch = V_length / V_resolution
1. DPI
水平方向: Hdpi = H_resolution x 1_inch / H_length
垂直方向: Vdpi = V_resolution x 1_inch / V_length
2. pixel pitch (单个像素宽度)
H pixel pitch = H_length / H_resolution
V pixel pitch = V_length / V_resolution